55001424 has 40 divisors (see below), whose sum is σ = 143428320. Its totient is φ = 18160768.

The previous prime is 55001423. The next prime is 55001431. The reversal of 55001424 is 42410055.

It is a self number, because there is not a number n which added to its sum of digits gives 55001424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55001423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (3585708).

Almost surely, 2^55001424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55001424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71714160).

55001424 is an abundant number, since it is smaller than the sum of its proper divisors (88426896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55001424 is a wasteful number, since it uses less digits than its factorization.

55001424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10827 (or 10821 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55001424 is about 7416.2944925347. The cubic root of 55001424 is about 380.2985281110.

Adding to 55001424 its reverse (42410055), we get a palindrome (97411479).

The spelling of 55001424 in words is "fifty-five million, one thousand, four hundred twenty-four".